Classification of matter

Of the elements in group 13 (3a), predict which has (a) the largest atomic radius (b) the largest electronegativity, and (c) the smallest ionization energy. explain your predictions yahoo answers

Which is a conversion factor for this statement of equality: 12 in. = 1 foot? A) 12 feet1 in. 12 feet1 in. B) 1 in. 12 feet1 in. 12 feet C) 1 foot12 in. 1 foot12 in. D) 1 foot1 in.

A 39 liter SCUBA tank contains 310 grams of oxygen gas (O2, molar mass = 32.0 g/mol) at 19°C. Calculate the pressure in kiloPascals (kPa).

How should the student label each circle in this diagram? reaction A: chemical; reaction B: nuclear reaction A: nuclear; reaction B: chemical reaction A: strong nuclear; reaction B: weak nuclear reaction A: weak nuclear; reaction B: strong nuclear

Which of the following elements form cations (positively charged ions) readily? C, O, Na, Fe, As, Br, K a. C, O, Na, Fe, As, Br, K b. C, O, Na c. Fe, As, Br, K d. O, Na, Fe e. Na, Fe, K

What is the net ionic equation for AgNO3 (aq) + Na2SO4 (aq)

What does it take to prove a hypothesis false? O A. It is impossible to prove a hypothesis false O B. At least ten examples O C. One counterexample O D. A poorly stated question

We dissolve 5g of sugar, C12H22O11, in water to make 1L solution. What is the concentration of this solution expressed as molarity.

Explain how the molar mass of a gas affects the rate at which the gas diffuses and effuses

Wat is a redox reaction